CN101678428A - Method and device for deep drawing blanks made of sheet metal into flangeless molded blanks - Google Patents
Method and device for deep drawing blanks made of sheet metal into flangeless molded blanks Download PDFInfo
- Publication number
- CN101678428A CN101678428A CN200780050758A CN200780050758A CN101678428A CN 101678428 A CN101678428 A CN 101678428A CN 200780050758 A CN200780050758 A CN 200780050758A CN 200780050758 A CN200780050758 A CN 200780050758A CN 101678428 A CN101678428 A CN 101678428A
- Authority
- CN
- China
- Prior art keywords
- deep
- draw
- anchor clamps
- spring force
- chamber
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
- B21D24/14—Devices controlling or operating blank holders independently, or in conjunction with dies pneumatically or hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to method for deep drawing blanks punched out of sheet metal that is painted or coated with film material, for example made of steel or aluminum, into flangeless molded blanks, wherein the blanks are formed to a crucible-shaped part, which has a flangeless cylindrical edge, around a drawing core by means of a drawing bell of a drawing die, and a predetermined spring force isapplied to the side of the edge opposite of the drawing bell during the forming of the edge of the blanks by means of a blank holder, wherein the spring force applied to the blank holder is spontaneously reduced substantially to zero shortly before the end of the drawing process.
Description
Technical field
The present invention relates to a kind of being used for according to claim 1 with method japanning or that add the thin-film material layer, that blank deep-draw that be made of metal sheet becomes flangeless profiled member.
Background technology
The lid that is used for container is usually so made, and promptly the blank that is formed by the metal sheet stamping-out by deep-draw, constitutes the profiled member that is close to jar shape thus in a deep-draw instrument, and it has a cover and a marginal portion.Certainly at this since diameter reduce can cause the jumping-up of material in the marginal portion.Because particularly the distortion with regulation of steel or aluminium of applied material is so can form less projection on free edge in such deep-draw process.Constitute so-called tip (earrings) thus.
For holding responsive material or promoting to be known that for the lid of container of inclusion of corrosion in the japanning of the inboard of this lid or add other coating (for example thin-film material).This coating had gone up at metal sheet (promptly at strip or metallic plate to be punched) already and had realized.At this, on by the columniform or flangeless edge of the lid of deep-draw, constitute the trickle fine hair or the shape of similar hair, it is considered to disadvantageous especially.This is because such " fine hair " pollutes instrument very fast consumingly on the one hand, pollutes the inclusion of container when it uses lid afterwards on the one hand in addition.
The common flat blank of deep-draw that is used for has a bell body of deep-draw and a deep-draw core body with the deep-draw instrument of moulding lid, and the bell body of deep-draw forms the profiled member of jar shape around the deep-draw core body.Because the above-mentioned diameter of mentioning reduces, and may constitute fold on the edge.Therefore such deep-draw instrument has so-called wrinkle resistant anchor clamps or annular clip, and it abuts on the fringe region under the effect of spring force.Be positioned in the inboard of this fringe region on the wrinkle resistant anchor clamps and therefore and abut on enamelled coating or the thin layer.Think that in this technical field the material crack that particularly must occur is the cause of loosing into the layer of a thread one thread under the situation of harder metal sheet when punching course finishes.
By the known a kind of spring assembly that is used for the wrinkle resistant anchor clamps of deep-draw instrument of EP 0595417B1, utilize described spring assembly, wrinkle resistant anchor clamps are reduced along with the carrying out of deep-draw process the active force of the flange of profiled member.Known compressive load per unit area at wrinkle resistant anchor clamps and profiled member is along with the carrying out of deformation process can increase under the situation that has constant power on the wrinkle resistant anchor clamps, because the fringe region of profiled member is more and more littler with the coefficient surface of wrinkle resistant anchor clamps.By continuous the reducing of insisting on wrinkle resistant anchor clamps, compressive load per unit area is close to and keeps constant under known situation.
Summary of the invention
The objective of the invention is to, a kind of method that is used for flat blank deep-draw is become the flangeless profiled member of jar shape is provided, wherein blank is formed by metal sheet stamping-out japanning or that add the thin-film material layer, wherein avoids forming hair lacquer (Lackhaaren) and similar phenomenon.
Above-mentioned purpose realizes by the feature of claim 1.
In the method for the invention before the deep-draw process finishes soon, the spring force on wrinkle resistant anchor clamps is reduced to zero suddenly basically.
Proved already, and under the situation of flangeless profiled member, can not form the hair lacquer,, promptly abutted on the wrinkle resistant anchor clamps edge of marginal portion or the essentially no pressure of seamed edge when the power of when the deep-draw process finishes soon, cancelling on the wrinkle resistant anchor clamps.The edge that no flange refers to profiled member does not in this case have flange on the seamed edge freely, and promptly the edge is columniform.
Method of the present invention relates to such understanding, and promptly lacquer or the film in the edge region peeled off from basic material by metal sheet stamping-out blank the time.The stamping-out blank or in advance or in deep-draw (this realizes the stamping-out process by the bell body of deep-draw) realize.Wrinkle resistant anchor clamps contact with the fringe region of being stripped from of coating and moment of therefore causing leaving wrinkle resistant anchor clamps at the metallic plate for the treatment of deep-draw does not have " chewing effect " when traditional deep-draw.The more or less strong in this way fringe region of being stripped from that damages, this hair of repeatedly mentioning above causing forming lacquer.
Conclusive for method of the present invention is that the spring force on the wrinkle resistant anchor clamps is almost vanishing in for example several milliseconds in the very short time.The moment that spring force on the wrinkle resistant anchor clamps is eliminated can be by wrinkle resistant anchor clamps or the bell body of deep-draw position-scheduled.Will be understood that this position is relevant with the geometry of profiled member to be made.
Spring force on the known wrinkle resistant anchor clamps provides by aerodynamic force, and for example by air cushion, this air cushion is by a piston closes, and self abuts in this piston on the wrinkle resistant anchor clamps via suitable force transfer element.When spring force should be eliminated, air cushion was exitted towards atmosphere in this structure.
After air cushion venting, the chamber that holds air cushion is refilled gas, so that provide spring force for deep-draw process next time.
Reduce continuously in the deep-draw process in the described known devices medi-spring power of beginning, so that between wrinkle resistant anchor clamps and profiled member edge, obtain the compressive load per unit area of near constant.Determined already in the present invention, reduced not bring any advantage in deep-draw process medi-spring power.On the contrary, the suggestion according to the present invention, spring force can rise until unexpected elimination in the deep-draw process linearly.This is this situation automatically, when the volume of air cushion reduces in the deep-draw process continuously.Compressive load per unit area gets a promotion in the deep-draw process thus, yet this part has compensated such phenomenon, promptly along with the distortion of fringe region, and the fringe region thickening, and therefore need higher spring force, it stops the formation of fold.
Deep-draw instrument of the present invention has each known element, as the bell body of deep-draw, deep-draw core body, wrinkle resistant anchor clamps and the pneumatic spring that is used for wrinkle resistant anchor clamps.This pneumatic spring is made of the gas volume in the chamber according to the present invention, and this chamber can be by a piston closes.Self acts on this piston on the wrinkle resistant anchor clamps via force transfer element, and this chamber is equipped with an air bleeding valve, and when the predetermined lower position of piston arrives one, air bleeding valve is operated, and exitted suddenly in the chamber thus.For operated valve, a structure supply and exhaust valve according to the present invention is provided with a rod member or control stick, and it is arranged in the chamber and can be by piston operation.
Because must rebulid pressure by inflation after the venting of chamber, so a structure according to the present invention is provided with a pressure source, pressure source can be connected with the chamber via charge valve.Control device finishes back operation charge valve in the deep-draw process.Piston and wrinkle resistant anchor clamps are automatically moved into the position on a top and are that next deep-draw process is ready thus.
Description of drawings
Elaborate by means of accompanying drawing below one embodiment of the present of invention.
Fig. 1 schematically illustrates the cutaway view of the blank that is used to make columniform profiled member;
Fig. 2 schematically illustrates in deep-draw process deep-draw instrument and blank according to Fig. 1;
Fig. 3 schematically illustrates the spring assembly that is used for according to the wrinkle resistant anchor clamps of the deep-draw instrument of Fig. 2;
Fig. 4 illustrates two spring indicatrixes that are used for according to the spring assembly of the wrinkle resistant anchor clamps of the deep-draw instrument of Fig. 2.
The specific embodiment
A not necessarily circular blank 10 is made of basic material 12 and coating 14 in Fig. 1.Basic material for example is made of steel plate or aluminium sheet.Coating 14 is lacquer, plastic sheeting etc.How the coating that is illustrated at Reference numeral 16 places on the edge of blank is peeled off from basic material 12.Such process occurs when the metal sheet stamping-out by coating becomes blank 10.
Have a for example columniform deep-draw core body 18, the bell body 20 of deep-draw of a ring-shaped cylinder shape and the wrinkle resistant anchor clamps 22 of an annular disk shaped according to the deep-draw instrument of Fig. 2.Such structure of deep-draw instrument is normally known.Deep-draw core body 18 for example is static, and the bell body 20 of deep-draw and suitable pressurizing unit for example the push rod of eccentric press connect.Wrinkle resistant anchor clamps 22 contact with force transfer element 24 in the bottom side, and this force transfer element is the part of spring assembly.The spring force that acts on the force transfer element 24 illustrates with 26 in Fig. 2.
How blank shown in Figure 2 10 is by deep-draw, promptly fringe region by means of the bell body 20 of deep-draw little by little around 18 moulding of deep-draw core body." inboard " that wrinkle resistant anchor clamps 22 abut in profiled member gone up and stoped because the reduced of material and form fold in the edge region.The structure of such deep-draw instrument and function are normally known.
In Fig. 3 as seen according to the force transfer element 24 of Fig. 2, itself and piston 28 actings in conjunction, piston 28 is positioned at a columniform chamber 30 hermetically.Fill for example air of the gas that preferably is under the predetermined pressure at deep-draw process lumen 30.If the wrinkle resistant anchor clamps 22 according to Fig. 2 move downward in the deep-draw process, piston 28 moves and compression pneumatic cushion in chamber 30 so, and the spring force on wrinkle resistant anchor clamps 22 is close to linear the rising thus.This illustrates by indicatrix 32 in Fig. 4, the relation of the displacement of spring force shown in it and piston 28 or wrinkle resistant anchor clamps 22.When as the described prior art of beginning, spring force squeezes along with the volumes that continue in the chamber 30 and when reducing continuously, obtains indicatrix 34.
Shown in Figure 3, the bottom 36 in chamber has opening, and opening is sealed by valve disc 38 usually, and valve disc 38 is gone into to close the position by a spring pretension.Valve disc 38 is provided with a control stick 42, its near vertical in the extension of piston 28 stretch in the chamber 30.In case piston 28 arrives control sticks 42, Open valve 38 so, and the air in the chamber 30 can reduce pressure suddenly, thereby the spring force 26 on the wrinkle resistant anchor clamps 22 is eliminated in several milliseconds time.Control stick design size like this makes that control stick is operated by piston 28 when fast its terminal location of arrival of the bell body 20 of deep-draw in the deep-draw process or wrinkle resistant anchor clamps 22.
Chamber 30 is connected with pressure source 46 via valve 48 via joint 44.50 operations of valve 48 controlled devices, control device 50 obtains a pressure signal via pressure gauge 52 on the one hand, it is corresponding to the pressure in the chamber 30, and in addition via 54 signals that obtain other, this when deep-draw process of signal indicating finishes and the bell body 20 of deep-draw turns back to initial position.Valve 48 is unlocked at the moment, so as to make pressure source 46 can be again to the gas of chamber 30 filling predetermined pressures.
Claims (9)
1. method that is used for the blank deep-draw is become flangeless profiled member, described blank by japanning or add the thin-film material layer, the metal sheet stamping-out that for example is made in steel or aluminum forms, described blank is deformed into the part of jar shape around the deep-draw core body by means of the bell body of the deep-draw of deep-draw instrument, this part has flangeless columniform edge, and between the shaping period at the edge of blank, predetermined spring force is applied on the side opposite with the bell body of deep-draw at described edge by means of wrinkle resistant anchor clamps, it is characterized in that the spring force when the deep-draw process finishes soon on the wrinkle resistant anchor clamps is reduced to zero suddenly basically.
2. the method for claim 1 is characterized in that, spring force is kept to zero basically in several milliseconds.
3. method as claimed in claim 1 or 2 is characterized in that, when wrinkle resistant anchor clamps arrive the position of a regulation, realizes the elimination of spring force.
4. as one of claim 1 to 3 described method, it is characterized in that spring force is produced by air cushion and when the deep-draw process finished soon, air cushion was exitted towards atmosphere.
5. method as claimed in claim 4 is characterized in that, the chamber that holds air cushion is after venting and/or refill the pressure that gas to one is scheduled to after profiled member is by the demoulding of deep-draw instrument.
6. as one of claim 1 to 5 described method, it is characterized in that spring force rises linearly during the deep-draw process, until unexpected disappearance.
7. be used for the blank deep-draw is become the deep-draw instrument of flangeless profiled member, described blank is formed by metal sheet stamping-out japanning or that add the thin-film material layer, this deep-draw instrument comprises the bell body of deep-draw, the deep-draw core body, wrinkle resistant anchor clamps and pneumatic spring, this pneumatic spring is applied to spring force on the wrinkle resistant anchor clamps, it is characterized in that, described pneumatic spring is made of the gas volume in chamber (30), this chamber utilizes piston (28) to be sealed shut, this piston self abuts on the wrinkle resistant anchor clamps (22) via force transfer element (24), and this chamber (30) are equipped with air bleeding valve (38), when piston (28) arrives a predetermined lower position, described air bleeding valve is operated, and chamber (30) are exitted suddenly thus.
8. deep-draw instrument as claimed in claim 7 is characterized in that, air bleeding valve (38) can connect with a rod member or control stick, and described rod member or control stick stretch in the chamber (30) and can be operated by piston (28).
9. as claim 6 or 7 described deep-draw instruments, it is characterized in that, pressure source (46) is set, it can be connected with chamber (30) via charge valve (48), and control device (50) is set is used for operating charge valve (48) after the deep-draw process finishes.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007005011.0 | 2007-02-01 | ||
| DE102007005011A DE102007005011B4 (en) | 2007-02-01 | 2007-02-01 | Method and drawing tool for deep drawing blanks of sheet metal material to flangeless moldings |
| PCT/EP2007/010053 WO2008092486A1 (en) | 2007-02-01 | 2007-11-21 | Method and device for deep drawing blanks made of sheet metal into flangeless molded blanks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101678428A true CN101678428A (en) | 2010-03-24 |
| CN101678428B CN101678428B (en) | 2012-05-30 |
Family
ID=39149212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800507584A Active CN101678428B (en) | 2007-02-01 | 2007-11-21 | Device for deep drawing blanks made of sheet metal into flangeless molded blanks |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US9283611B2 (en) |
| EP (1) | EP2125264B1 (en) |
| JP (1) | JP5141921B2 (en) |
| CN (1) | CN101678428B (en) |
| AT (1) | ATE474677T1 (en) |
| AU (1) | AU2007345439B2 (en) |
| BR (1) | BRPI0721214B1 (en) |
| CA (1) | CA2676966C (en) |
| DE (2) | DE102007005011B4 (en) |
| DK (1) | DK2125264T3 (en) |
| ES (1) | ES2345298T3 (en) |
| MX (1) | MX2009008098A (en) |
| PL (1) | PL2125264T3 (en) |
| PT (1) | PT2125264E (en) |
| RU (1) | RU2448799C2 (en) |
| WO (1) | WO2008092486A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103958202A (en) * | 2011-08-19 | 2014-07-30 | 3M创新有限公司 | Method of forming deep-drawn paint film laminated sheet metal and articles made therefrom |
| CN105324192A (en) * | 2013-07-03 | 2016-02-10 | 新日铁住金株式会社 | Press molding device and press molding method |
| CN108136471A (en) * | 2015-08-12 | 2018-06-08 | 赖纳纳罗斯卡工程有限公司 | For the deep drawing tool and Deep drawing method of deep-draw blank |
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| DE102007005011B4 (en) * | 2007-02-01 | 2012-09-06 | Saeta Gmbh & Co. Kg | Method and drawing tool for deep drawing blanks of sheet metal material to flangeless moldings |
| ITMC20080229A1 (en) * | 2008-12-22 | 2010-06-23 | Beltrani Alfio | PROCEDURE FOR PROCESSING METAL SHEETS, IN ORDER TO OBTAIN ROUNDED AND VARNISHED ARTICLES. |
| CN103978085B (en) * | 2014-04-08 | 2016-01-20 | 江门市新会区同达化工机械制造有限公司 | A kind of press-processing method |
| DE102016104375A1 (en) * | 2016-03-10 | 2017-09-14 | Pester Pac Automation Gmbh | Device and method for operating the device |
| DE102017118559A1 (en) | 2017-08-15 | 2019-02-21 | Neoform Flensburg Gmbh & Co. Kg | Deep-drawing tool for deep drawing of blanks |
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2007
- 2007-02-01 DE DE102007005011A patent/DE102007005011B4/en active Active
- 2007-11-11 US US12/525,261 patent/US9283611B2/en active Active - Reinstated
- 2007-11-21 DK DK07856204.8T patent/DK2125264T3/en active
- 2007-11-21 BR BRPI0721214-3A patent/BRPI0721214B1/en active IP Right Grant
- 2007-11-21 DE DE502007004524T patent/DE502007004524D1/en active Active
- 2007-11-21 JP JP2009547539A patent/JP5141921B2/en not_active Expired - Fee Related
- 2007-11-21 EP EP07856204A patent/EP2125264B1/en active Active
- 2007-11-21 CN CN2007800507584A patent/CN101678428B/en active Active
- 2007-11-21 PL PL07856204T patent/PL2125264T3/en unknown
- 2007-11-21 ES ES07856204T patent/ES2345298T3/en active Active
- 2007-11-21 CA CA2676966A patent/CA2676966C/en active Active
- 2007-11-21 AT AT07856204T patent/ATE474677T1/en active
- 2007-11-21 WO PCT/EP2007/010053 patent/WO2008092486A1/en active Application Filing
- 2007-11-21 PT PT07856204T patent/PT2125264E/en unknown
- 2007-11-21 AU AU2007345439A patent/AU2007345439B2/en active Active
- 2007-11-21 MX MX2009008098A patent/MX2009008098A/en active IP Right Grant
- 2007-11-21 RU RU2009132665/02A patent/RU2448799C2/en active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103958202A (en) * | 2011-08-19 | 2014-07-30 | 3M创新有限公司 | Method of forming deep-drawn paint film laminated sheet metal and articles made therefrom |
| CN103958202B (en) * | 2011-08-19 | 2016-01-20 | 3M创新有限公司 | The method forming paint film layer alloy piece and the goods made thus |
| CN105324192A (en) * | 2013-07-03 | 2016-02-10 | 新日铁住金株式会社 | Press molding device and press molding method |
| CN108136471A (en) * | 2015-08-12 | 2018-06-08 | 赖纳纳罗斯卡工程有限公司 | For the deep drawing tool and Deep drawing method of deep-draw blank |
| CN108136471B (en) * | 2015-08-12 | 2019-12-27 | 赖纳纳罗斯卡工程有限公司 | Deep-drawing tool and method for deep-drawing a blank |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2676966A1 (en) | 2008-08-07 |
| PT2125264E (en) | 2010-08-02 |
| DK2125264T3 (en) | 2010-11-15 |
| JP2010517778A (en) | 2010-05-27 |
| AU2007345439A1 (en) | 2008-08-07 |
| EP2125264B1 (en) | 2010-07-21 |
| PL2125264T3 (en) | 2010-12-31 |
| BRPI0721214A2 (en) | 2014-03-18 |
| JP5141921B2 (en) | 2013-02-13 |
| US9283611B2 (en) | 2016-03-15 |
| WO2008092486A1 (en) | 2008-08-07 |
| CN101678428B (en) | 2012-05-30 |
| EP2125264A1 (en) | 2009-12-02 |
| BRPI0721214B1 (en) | 2019-04-30 |
| ES2345298T3 (en) | 2010-09-20 |
| RU2009132665A (en) | 2011-03-10 |
| RU2448799C2 (en) | 2012-04-27 |
| CA2676966C (en) | 2012-05-22 |
| DE102007005011A1 (en) | 2008-08-14 |
| MX2009008098A (en) | 2009-12-14 |
| DE102007005011B4 (en) | 2012-09-06 |
| US20100139357A1 (en) | 2010-06-10 |
| ATE474677T1 (en) | 2010-08-15 |
| AU2007345439B2 (en) | 2014-09-04 |
| DE502007004524D1 (en) | 2010-09-02 |
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